The influence of Buckminsterfullerenes and their derivatives on polymer properties

Weng, Dexi; Lee, H.K; Levón, Kalle; Mao, Jiale; Scrivens, Walter A.; Stephens, Eric B.; Tour, James M.

doi:10.1016/s0014-3057(98)00055-x

Cited by 40 publications

(31 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based also on previous work 19,32,34 , this decrease in T g along the extruder is most likely due to the fact that C 60 is leaving the PS matrix and re9agglomerating, as also supported by our SANS results. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 solvent method is seen in Figure 8(a).…”

Section: Acs Paragon Plus Environmentsupporting

confidence: 90%

See 1 more Smart Citation

A Journey along the Extruder with Polystyrene:C₆₀ Nanocomposites: Convergence of Feeding Formulations into a Similar Nanomorphology

et al. 2017

View full text Add to dashboard Cite

We investigated the effect of the feeding formulation (premixed powders of pure components versus solvent-blended mixture) of polystyrene–C60 composites on the dispersion and reagglomeration phenomena developing along the barrel of a twin-screw extruder. The dispersion of C60 in the PS matrix is studied over different length scales using a combination of optical microscopy, spin-echo small-angle neutron scattering (SESANS), small-angle neutron scattering (SANS), small-angle X-ray scattering (SAXS), and wide-angle X-ray scattering (WAXS). When a solvent-blended mixture is used as the feeding formulation, the inlet material contains essentially molecularly dispersed C60 as revealed by the nanodomains with very small phase contrast. However, C60 reagglomeration occurs along the extruder, creating a morphology still containing only nanodomains but with much higher phase contrast. In the case of mixed powders, the material evolves from the initial macroscopic mixture of pure polystyrene and C60 into a composite simultaneously containing micro- and nanoaggregates of C60 as well as C60 molecularly dispersed in the matrix. Our results show that the two different initial feeding formulations with widely different initial morphologies converge along the extruder, through opposite morphological pathways, into a similar final nanomorphology which is dictated by the interplay between the thermodynamics of the system and the flow. Correlations between the morphological evolution along the extruder and the thermorheological properties of the composites are identified.

show abstract

Section: Acs Paragon Plus Environmentsupporting

confidence: 90%

“…Loadings beyond this concentration gradually reverted the composite T g towards the neat PS value. Increases in T g with C 60 loadings in PS composites were also reported by Weng et al 32 and by Wong et al 19 , with the latter also concluding that beyond 1 wt% nanoparticle concentration, the C 60 is aggregated in polydispersed aggregates.…”

supporting

confidence: 70%

A Journey along the Extruder with Polystyrene:C₆₀ Nanocomposites: Convergence of Feeding Formulations into a Similar Nanomorphology

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Effective way to solve this problem is to modify the polymer matrix by fillers insertion. Such composites may have applications in such various areas of industry as sensors, sorbents, catalysts, and membranes, as well as in biochemistry and medicine as drug templates, due to their improved mechanical, electrical, thermodynamic, antimicrobial properties (Badamshina and Gafurova, 2008;Alekseeva et al, 2009Alekseeva et al, , 2012Alekseeva et al, , 2013Weng et al, 1999;Yang and Nelson, 2006;Hwu et al, 2002). Note polymers modified using the filling agents considerably change their original parameters and acquire improved physicochemical properties even at small filler concentrations (Badamshina and Gafurova, 2008).…”

Section: Introductionmentioning

confidence: 99%

Effect of the bentonite filler on structure and properties of composites based on hydroxyethyl cellulose

Алексеева

Родионова

Bagrovskaya

et al. 2019

Arabian Journal of Chemistry

View full text Add to dashboard Cite

Effect of the bentonite filler on structure and properties of composites based on hydroxyethyl cellulose, Arabian Journal of Chemistry (2015), doi: http://dx. AbstractGranulometric test and morphological analysis of the bentonite particles were performed using laser diffraction and low-temperature nitrogen adsorption-desorption techniques. Bentonite particles were immobilized into the hydroxyethyl cellulose matrix by mechanical dispersion, and composite films were obtained. The effect of concentration of the filling agent on structure and tensile properties of composites was revealed. Data on the nature of interaction between hydroxyethyl cellulose and bentonite after the modification of polymer was obtained by IR spectroscopy. It was found that the hydroxyethyl cellulose/bentonite composite films showed an antimicrobial effect against E. coli and Staph. aureus bacteria, as well against fungi association.

show abstract

“…Insertion of fillers, such as fullerenes, results in modification of the original polymer matrix, which can lead to creation of materials with improved physical and chemical properties and the main service characteristics (mechanical, electrical). There are numerous publications that deal with the mechanical, optical, tribological, thermochemical properties and structure of polymers containing fullerene (Badamshina and Gafurova, 2008;Alekseeva et al, 2012;Weng et al, 1999;Jiang et al, 2008;Tajima et al, 1997;Ogasawara et al, 2009;Zhao et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of C60 filling on structure and properties of composite films based on polystyrene

Алексеева

Bagrovskaya

Носков

2018

Arabian Journal of Chemistry

View full text Add to dashboard Cite

Both polystyrene films and polystyrene films filled with fullerenes (C 60 ) were fabricated by the solution cast method. Mechanism of fullerene-polystyrene interaction, the structural characteristics of films, and their antimicrobial activity were researched. We found that the polystyrene/ fullerene composite films manifest bacteriostatic and fungistatic effect. ª 2014 Production and hosting by Elsevier B.V. on behalf of King Saud University.

show abstract

The influence of Buckminsterfullerenes and their derivatives on polymer properties

Cited by 40 publications

References 33 publications

A Journey along the Extruder with Polystyrene:C₆₀ Nanocomposites: Convergence of Feeding Formulations into a Similar Nanomorphology

A Journey along the Extruder with Polystyrene:C₆₀ Nanocomposites: Convergence of Feeding Formulations into a Similar Nanomorphology

Effect of the bentonite filler on structure and properties of composites based on hydroxyethyl cellulose

Effect of C60 filling on structure and properties of composite films based on polystyrene

Contact Info

Product

Resources

About

The influence of Buckminsterfullerenes and their derivatives on polymer properties

Cited by 40 publications

References 33 publications

A Journey along the Extruder with Polystyrene:C60 Nanocomposites: Convergence of Feeding Formulations into a Similar Nanomorphology

A Journey along the Extruder with Polystyrene:C60 Nanocomposites: Convergence of Feeding Formulations into a Similar Nanomorphology

Effect of the bentonite filler on structure and properties of composites based on hydroxyethyl cellulose

Effect of C60 filling on structure and properties of composite films based on polystyrene

Contact Info

Product

Resources

About

A Journey along the Extruder with Polystyrene:C₆₀ Nanocomposites: Convergence of Feeding Formulations into a Similar Nanomorphology

A Journey along the Extruder with Polystyrene:C₆₀ Nanocomposites: Convergence of Feeding Formulations into a Similar Nanomorphology